Toothbrush



FIG. 1 is a perspective view of a toothbrush;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear end view thereof. 

The ornamental design for a toothbrush, as shown. 